i.MXRT1176 USDHC2 and FlexSPI(Octal Flash) pin conflict

[许贻辉2023]

i.MXRT1176 USDHC2 and FlexSPI(Octal Flash) pin conflict, I checked IMXRT1170RM, if I want to use FlexSPI1 to start from Octal Flash, then pin conflict with USDHC2 (8-wire mode), Any recommended solutions for tech support?

 

 

In addition, FlesSPI1 and FlexSPI2; Is there any performance difference between connecting Octal Flash? Such as clock frequency, prefetching capabilities.

[kerryzhou · Accepted solution]

Hi @许贻辉2023 ,

   Good question!

   If just in FlexSPI1 and the USDHC2 (8-wire mode), no way, must one interface is not used.

   But, RT1170 is powerful, it have two FlexSPI, you totally can boot from the FlexSPI2, that won't conflict with the USDHC2 (8-wire mode).

   More details, please read this blog:

https://www.cnblogs.com/henjay724/p/15139381.html

  FlesSPI1 and FlexSPI2 connect to the octal flash, is the same performance, just the map address is different.

Wish it helps you!

Best Regards,

Kerry